The bare minimum to build a Hello World app in React with JSX.

First, make sure you have node and git installed on your computer

Node: https://nodejs.org/en/
Git: https://git-scm.com/downloads

1. Create a folder on your computer, such as /projects/

2. Open the /projects/ folder in a terminal, such as VS Code's integrated terminal

3. Type: git clone https://github.com/kristjanmar/minimal-react-with-jsx.git

4. Type: cd minimal-react-with-jsx

5. Type: npm install

6. Type: npx webpack

Now you should be able to open the index.html file in your browser. It is listed under /projects/minimal-react-with-jsx/index.html

You should now see "Hello World!" rendered with React